|Network|Company|Mobile Prefixes|Mobile Examples|Landline Prefixes|Landline Examples|Notes|
|---|---|---|---|---|---|---|
|Beeline|Sotelco Ltd.|031 (+ 7 digits) 060 (+ 6 digits) 066 (+ 6 digits) 067 (+ 6 digits) 068 (+ 6 digits) 090 (+ 6 digits)|+855 31 234 5678 +855 60 234 567|NDC + '46' + 4-5 digits|+855 23 461 2346 +855 64 461 234||
|Mobitel|CamGSM Co., Ltd.|011 (+ 6 digits) 012 (+ 6-7 digits) 017 (+ 6 digits) 061 (+ 6 digits) 076 (+ 7 digits) 077 (+ 6 digits) 078 (+ 6 digits) 085 (+ 6 digits) 089 (+ 6 digits) 092 (+ 6 digits) 095 (+ 6 digits) 099 (+ 6 digits)|+855 76 234 5678 +855 12 123 4567 +855 12 234 567 +855 92 123 456|-|-|Also known as Cellcard Incorporates the former Mfone|
|CooTel|Xinwei (Cambodia) Telecom Co., Ltd|038 (+ 7 digits)|+855 38 383 8380|NDC + '47' + 4-5 digits|+855 23 471 2346 +855 64 471 234||
|Excell|GT-TELL (Cambodia) Investment Co., Ltd.|018 (+ 6 digits)|+855 18 234 567|-|-||
|Metfone|Viettel (Cambodia) Pte., Ltd.|088 (+ 7 digits) 097 (+ 7 digits)|+855 88 234 5678 +855 97 234 5678|-|-||
|qb|Cambodia Advance Communications Co., Ltd. (CADCOMMS)|013 (+ 6 digits) 080 (+ 6 digits) 083 (+ 6 digits) 084 (+ 6 digits)|+855 13 234 567|-|-||
|Smart|Smart Axiata Co., Ltd|010 (+ 6 digits) 015 (+ 6 digits) 016 (+ 6 digits) 069 (+ 6 digits) 070 (+ 6 digits) 081 (+ 6 digits) 086 (+ 6 digits) 087 (+ 6 digits) 093 (+ 6 digits) 096 (+ 7 digits) 098 (+ 6 digits)|+855 96 234 5678 +855 10 234 567|NDC + '45' + 4-5 digits|+855 23 451 2346 +855 64 451 234|Incorporates the former Hello Axiata|

Question: if a man has a phone on qb's network, how many different mobile prefixes could his phone have?
Answer: 4